Proportional Directional Valve 4WRLF16W6-200LJ-4X/MXY00/24TD95 - Bosch Rexroth R901522620

The job here is closed-loop directional control without a separate amplifier cabinet. The 4WRLF valve in size 16 handles 250 l/min nominal flow, tolerates up to 800 l/min and works at up to 350 bar operating pressure. Internal spool position feedback runs against the integrated fieldbus electronics, so the loop stays inside the valve body.

Key benefits

• 250 l/min nominal flow in size 16, flow ceiling 800 l/min
• 350 bar maximum operating pressure, subplate mounting to connection diagram ISO 4401-07-07-0-05
• Integrated fieldbus electronics with internal spool position feedback, no external amplifier card needed
• 24 VDC through a 7-pole connector (6 + PE) to EN 175201-804 carrying voltage supply and enable acknowledgment
• External pilot oil supply and external pilot oil return keep the pilot stage independent of working pressure
• 12.42 kg weight, NBR seals for HL hydraulic fluid

Applications

Typical duty is in presses, test rigs and forming machines where a cylinder takes a large oil volume and still has to stop on a position. Spool symbol W6 with 3 switching positions and 4 ports covers standard four-way operation. The external pilot circuit pays off when working pressure collapses during the cycle and the pilot stage still has to move the main spool.

Manufacturer

Bosch Rexroth, material number R901522620. The valve carries UKCA conformity to SI2016/1091 for electromagnetic compatibility.